425157891 has 16 divisors (see below), whose sum is σ = 578983680. Its totient is φ = 277411680.

The previous prime is 425157883. The next prime is 425157919. The reversal of 425157891 is 198751524.

It is not a de Polignac number, because 425157891 - 2³ = 425157883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (425157791) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66756 + ... + 72846.

It is an arithmetic number, because the mean of its divisors is an integer number (36186480).

Almost surely, 2^425157891 is an apocalyptic number.

425157891 is a deficient number, since it is larger than the sum of its proper divisors (153825789).

425157891 is a wasteful number, since it uses less digits than its factorization.

425157891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6586.

The product of its digits is 100800, while the sum is 42.

The square root of 425157891 is about 20619.3571917264. The cubic root of 425157891 is about 751.9403923960.

The spelling of 425157891 in words is "four hundred twenty-five million, one hundred fifty-seven thousand, eight hundred ninety-one".